What is the equation of the line that passes through the point (-1, -5) and has a
slope of -3?

Cthe residual plot for model 1 has a non random pattern and is a good fit for the data

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post